Principles of Power System" is a comprehensive textbook for students of engineering. It also caters to the requirements of those readers who wish to increase their knowledge and gain a sound grounding in power systems as a whole. Twenty six chapters succinctly sum up the subject with topics such as Supply and Distribution Systems, Fault Calculations (Symmetrical and Unsymmetrical), Voltage Control, Fuses and Circuit Breakers giving the learner an understanding of the subject and an orientation to apply the knowledge gained in real world problem solving. A book which has seen, foreseen and incorporated changes in the subject for more than 30 years, it continues to be one of the most sought after texts by the students., 1. Conceptual understanding is given preference with theories being explained in clear and concise points. 2. Close to 800 figures and examples provide comprehensive support to all concepts explained. 3. More than 600 in-text tutorial problems and chapter-end questions and MCQs provide apt practice to all concepts explained. 1. Introduction 2. Generating Stations 3. Variable Load on Power Stations 4. Economics of Power Generation 5. Tariff 6. Power Factor Improvement 7. Supply Systems 8. Mechanical Design of Overhead Lines 9. Electrical Design of Overhead Lines 10. Performance of Transmission Lines 11. Underground Cable 12. Distribution Systems - General 13. D.C. Distribution 14. A.C. Distribution 15. Voltage Control 16. Introduction to Switchgear 17. Symmetrical Fault Calculations 18. Unsymmetrical Fault Calculations 19. Circuit Breakers 20. Fuses 21. Protective Relays 22. Protection of Alternators and Transformers 23. Protection of Busbars and Lines 24. Protection Against Over Voltages 25. Sub-Stations 26. Neutral Grounding